wifi: iwlwifi: enable monitor on passive/inactive channels

If firmware supports pure passive monitor on passive/inactive
channels, enable that.

type=feature
ticket=jira:WIFI-389883

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Change-Id: I9969d3a46fed48e67fa28a7d00080b0dd314dabd
Reviewed-on: https://gerritwcs.ir.intel.com/c/iwlwifi-stack-dev/+/98500
Tested-by: iil_jenkins iil_jenkins <EC.GER.UNIX.IIL.JENKINS@INTEL.COM>
tested: iil_jenkins iil_jenkins <EC.GER.UNIX.IIL.JENKINS@INTEL.COM>
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
x-iwlwifi-stack-dev: e041616bc17d722b4bb8fe1afc84017a350a81b5

3 files changed, 13 insertions, 4 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/file.h b/drivers/net/wireless/intel/iwlwifi/fw/file.h
index 9fd5f14bfb..deb1499e75 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/file.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h
@@ -407,6 +407,8 @@ typedef unsigned int __bitwise iwl_ucode_tlv_capa_t;
  * @IWL_UCODE_TLV_CAPA_SPP_AMSDU_SUPPORT: Support SPP (signaling and payload
  *	protected) A-MSDU.
  * @IWL_UCODE_TLV_CAPA_SECURE_LTF_SUPPORT: Support secure LTF measurement.
+ * @IWL_UCODE_TLV_CAPA_MONITOR_PASSIVE_CHANS: Support monitor mode on otherwise
+ *	passive channels
  *
  * @NUM_IWL_UCODE_TLV_CAPA: number of bits used
  */
@@ -510,6 +512,7 @@ enum iwl_ucode_tlv_capa {
 	IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT	= (__force iwl_ucode_tlv_capa_t)116,
 	IWL_UCODE_TLV_CAPA_CHINA_22_REG_SUPPORT		= (__force iwl_ucode_tlv_capa_t)117,
 	IWL_UCODE_TLV_CAPA_SECURE_LTF_SUPPORT		= (__force iwl_ucode_tlv_capa_t)121,
+	IWL_UCODE_TLV_CAPA_MONITOR_PASSIVE_CHANS	= (__force iwl_ucode_tlv_capa_t)122,
 	NUM_IWL_UCODE_TLV_CAPA
 /*
  * This construction make both sparse (which cannot increment the previous
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
index b4e18dccc6..e62bef5ff1 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
@@ -387,11 +387,14 @@ static int iwl_nl80211_band_from_channel_idx(int ch_idx)
 	return NL80211_BAND_2GHZ;
 }
 
-static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
+static int iwl_init_channel_map(struct iwl_trans *trans,
+				const struct iwl_fw *fw,
 				struct iwl_nvm_data *data,
 				const void * const nvm_ch_flags,
 				u32 sbands_flags, bool v4)
 {
+	const struct iwl_cfg *cfg = trans->cfg;
+	struct device *dev = trans->dev;
 	int ch_idx = 0;
 	int n_channels = 0;
 	struct ieee80211_channel *channel;
@@ -475,6 +478,10 @@ static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
 		else
 			channel->flags = 0;
 
+		if (fw_has_capa(&fw->ucode_capa,
+				IWL_UCODE_TLV_CAPA_MONITOR_PASSIVE_CHANS))
+			channel->flags |= IEEE80211_CHAN_CAN_MONITOR;
+
 		iwl_nvm_print_channel_flags(dev, IWL_DL_EEPROM,
 					    channel->hw_value, ch_flags);
 		IWL_DEBUG_EEPROM(dev, "Ch. %d: %ddBm\n",
@@ -1402,12 +1409,11 @@ static void iwl_init_sbands(struct iwl_trans *trans,
 			    const struct iwl_fw *fw)
 {
 	struct device *dev = trans->dev;
-	const struct iwl_cfg *cfg = trans->cfg;
 	int n_channels;
 	int n_used = 0;
 	struct ieee80211_supported_band *sband;
 
-	n_channels = iwl_init_channel_map(dev, cfg, data, nvm_ch_flags,
+	n_channels = iwl_init_channel_map(trans, fw, data, nvm_ch_flags,
 					  sbands_flags, v4);
 	sband = &data->bands[NL80211_BAND_2GHZ];
 	sband->band = NL80211_BAND_2GHZ;
diff --git a/versions b/versions
index d64634f1a8..9d2b315181 100644
--- a/versions
+++ b/versions
@@ -2,4 +2,4 @@ BACKPORTS_VERSION="(see git)"
 BACKPORTED_KERNEL_VERSION="(see git)"
 BACKPORTED_KERNEL_NAME="iwlwifi"
 BACKPORTS_BUILD_TSTAMP=__DATE__ \" \" __TIME__
-BACKPORTS_GIT_TRACKED="iwlwifi-stack-public:master:12004:df8cac2a"
+BACKPORTS_GIT_TRACKED="iwlwifi-stack-public:master:12005:e041616b"